Our company is increasing efficiency by digitizing operations.

This equation has homogeneity.

Solving a linear equation is difficult.

Keijiro is my best friend.

Sennenji is my best friend.

He always sticks his nose into other people's business like a busybody.

Saburo is my best friend.

Reijiro is my best friend.

In Japanese grammar, postpositions play an important role.

A back vowel is a sound where the back of the tongue approaches the palate.